<template>
    <div class="cmt-container">
        <h3>发表评论</h3>
        <hr>
        <textarea placeholder="输入内容" maxlength="120" v-model="msg"></textarea>

        <mt-button type="primary" size="large" @click="postComment">发表评论</mt-button>
        <div class="cmt-list">
            <div class="cmt-item" v-for="(item, i) in comments" :key="item.add_time">
                <div class="cmt-title">
                    第{{ i+1 }}楼&nbsp;&nbsp;用户:{{item.user_name}}&nbsp;&nbsp;发表时间:{{item.add_time | dateFormat}}
                </div>
                <div class="cmt-body">
                    {{item.content === '' ? "此用户很懒，没说嘛" : item.content}}
                </div>
            </div>
        </div>

        <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
    </div>
</template>

<script>
import {Toast} from 'mint-ui';
    export default {
        data() {
            return {
                pageindex : 1,
                comments : [],
                msg : ''
            }
        },
        created(){
            this.getComments();
        },
        methods: {
            getComments(){
                this.$http.get("api/getcomments/" + this.id +"?pageindex=" + this.pageindex).then(result => {
                    if(result.body.status ===0 ){
                        // this.comments = result.body.message

                        this.comments = this.comments.concat(result.body.message)
                    }else{
                        Toast(result.body.status)
                        // Toast('出错了')
                    }
                })
            },
            getMore(){
                this.pageindex++;
                this.getComments();
            },
            postComment(){
                if(this.msg.trim().length === 0){
                    return Toast('内容不能为空')
                }

                this.$http.post('api/postcomment/' + this.$route.params.id,{
                    content:this.msg.trim()
                }).then(function(result){
                    
                    if(result.body.status === 0 ){
                        var cmt = {
                            user_name : '匿名用户',
                            add_time : Date.now(),
                            content : this.msg.trim()
                        }
                        this.comments.unshift(cmt)
                        this.msg = ''
                    }else{
                        Toast('出错')
                    }
                })
            }
        },
        props : ["id"]
    }
</script>

<style lang="scss" scoped>
    .cmt-container{
        h3{
            font-size: 18px;
        }

        textarea{
            font-size: 14px;
            height: 85px;
            margin: 0;
        }
    }
    .cmt-list{
        margin:10px;

        .cmt-item{
            font-size: 12px;

            .cmt-title{
                line-height: 30px;
                background-color: #ccc;
            }
            .cmt-body{
                line-height: 35px;
                text-indent: 2em;
            }
        }
    }
</style>